Such is the beauty of having a sprawling and popular cinematic universe, Marvel has consistently delighted fans with easter eggs and cameos over the years. From Tony Stark's appearance in The Incredible Hulk, to Falcon appearing in Ant-Man, to Captain America: Civil War which was essentially one long string of cameos, there's a childish glee that comes from seeing this cinematic cross-pollination.

Doctor Strange is the next superhero in line for an origin story, and until now there hadn't been a great deal of expectation around any potential cameos. That's not too surprising when you think about it, though. After all, much like Guardians of the Galaxy, Doctor Strange is very different in both tone and focus when compared with other MCU movies, so a cameo from any of the rest of the gang might not be the most natural fit. But, a new report suggests the creative minds over at Marvel might have found away to not just shoehorn a cameo into Doctor Strange, but a cameo from an Avenger, no less.

In a new report, MCU Exchange points to a tweet from Doctor Strange actor, Benedict Wong.

It's a fairly nondescript tweet, until you realize that Doctor Strange actually wrapped all the way back in April. The report suggests that Wong's tweet is actually referring to the completion of reshoots. They go on to say that, during these reshoots, director Scott Derrickson managed to get a major Avengers actor on set to shoot a cameo for the movie. According to the tweet from a Podcaster, that cameo was none other than Tony Stark himself.

It appears as if my little spies have bagged me a scoop! Tony Stark may have a cameo in #DoctorStrange

It's not exactly the most reliable source, but given that many casual Marvel fans might be struggling to see where Doctor Strange fits in within the MCU, an RDJ cameo could be just the ticket for a studio that is looking to really kick off the start of a big expansion in their storytelling.